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dynamometer car

noun, Railroads.
a car equipped with special instruments and coupled to a locomotive to record its energy output, fuel consumption, and other data continuously during a regularly scheduled run.
Origin of dynamometer car
First recorded in 1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for dynamometer car
Historical Examples
  • The dynamometer car is constructed to indicate the tractive effort of the engine, the speed, and the distance travelled.

    Minimum Gauge Railways Arthur Heywood
  • We run and double back with the dynamometer car to try out our tractive power.

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